JP3817918B2 - Parts supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a component supply apparatus that supplies a large number of chip components in a line.
[0002]
[Prior art]
Conventionally, bulk feeders and vibratory bowl feeders are known as this type of component supply apparatus. Bulk feeders are roughly classified into a bridge break caused by air and a bridge break caused by a push-up pin. However, the air type has a drawback that it is difficult to adjust the air amount and direction, and the push-up pin type has a drawback that the part is easily damaged because the pin hits the part every time. In any case, since the chip parts are concentrated all at once toward the funnel-shaped outlet, even if a bridge break is performed once, the bridge is immediately regenerated, resulting in poor supply efficiency. On the other hand, in the case of the vibration type bowl feeder, although it is difficult to form a bridge, there is a problem that the apparatus is expensive, vibration is easily transmitted to other apparatuses, and a large space is required.
[0003]
[Problems to be solved by the invention]
In order to solve such a problem, the applicant of the present application has proposed a component supply apparatus having a simple structure and good alignment / discharge efficiency (Japanese Patent Application No. 10-134970 ). In this supply device, a component storage chamber for storing chip components is formed between the fixed drum and the rotating drum, and an alignment groove is formed on the inner surface of the fixed drum to align the chip components in a predetermined direction and slide downward. A gate is provided at the lower end of the alignment groove for passing chip parts that slide down in a predetermined posture along the alignment groove one by one, and a discharge passage is provided for discharging the chip parts that have passed through the gate in a line. The inner surface of the rotating drum is provided with a claw portion that urges the chip component in an abnormal posture stopped at the gate in a direction opposite to the discharging direction so as to release the clogging.
[0004]
In the case of this supply device, the chip parts are lowered into the alignment groove and aligned in a predetermined direction, and the chip parts are aligned in a predetermined posture by passing through the gate, and the claw portion of the rotary drum is clogged. Since it is released, the alignment / discharge efficiency is high. However, since the chip parts are directly put into the parts storage chamber, it is not preferable to put in a large quantity of chip parts in consideration of the alignment / discharge efficiency of the chip parts. Moreover, if a large amount of parts are thrown in with a large part storage chamber, the time for stirring the chip parts becomes longer, which may cause damage to the parts.
[0005]
SUMMARY OF THE INVENTION An object of the present invention is to provide a component supply device that can reduce chip component damage and that can be efficiently supplied in a line.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, according to the first aspect of the present invention, a rectangular parallelepiped chip component having a length L longer than a height H and a width W or a columnar chip component having a length L longer than a diameter d is arranged in a row. In a component supply device that discharges in a horizontal position , a chip is stored between the supply device main body, a rotating drum that rotates with respect to the main body about a horizontal axis, and the main body and the rotating drum. The rotary drum is provided with a circumferential wall that divides the component storage chamber into an inner chamber and an annular outer chamber, and chip components are supplied to the inner chamber from the outside. The circumferential wall is provided with a pocket for scooping up a predetermined number of chip components in the inner chamber as the rotating drum rotates, and a receiving portion for receiving the components scooped up by the pocket is provided at a portion facing the inner chamber of the main body. Vignetting in the body is provided with a guide passage for guiding the parts received in the socket to the outer chamber, the said outer chamber aligned discharge portion is provided for discharging aligning in a row chip components, the aligning discharge The section is formed along the inner peripheral surface of the main body constituting the outer chamber, and is formed at the lower end of the alignment groove and the arc-shaped alignment groove in which the chip parts are dropped and vertically aligned and slid downward. And a gate for passing chip parts that slide down side by side along the alignment groove one by one, and a discharge passage that is connected to the lower side of the gate and is inclined downward. And a claw portion that rotates so as to pass over the alignment groove and urges the chip component in a standing posture stopped at the gate in a direction opposite to the discharging direction to release the clogging. Providing parts supply equipment To.
[0007]
The chip component supplied to the inner chamber of the component storage chamber is scooped up by the pocket as the rotary drum rotates and is received by the receiving port. The chip component that has entered the receiving port enters the outer chamber through the introduction passage. The number of chip parts introduced into the outer chamber is limited by the size of the pocket, the rotational speed of the rotating drum, the size of the receiving port, and the like. Accordingly, there are relatively few chip parts in the outer chamber, bridges are less likely to occur, the alignment / discharge efficiency by the alignment discharge part is improved, and the chip parts are discharged when the chip parts are aligned and discharged from the alignment discharge part. Since the stirring time is shortened, damage to the parts can be reduced.
In addition, the alignment discharge portion provided in the outer chamber is formed along the inner peripheral surface of the main body constituting the outer chamber, and the arc-shaped alignment groove that slides downward by dropping the chip components in a single row, and A gate that is formed at the lower end of the alignment groove and passes through the chip parts that slide down in a sideways posture along the alignment groove one by one, and a discharge passage that is connected to the lower side of the gate and is inclined downward, There is provided a claw portion that rotates so as to pass over the gate and the alignment groove and urges the chip component in a standing posture stopped at the gate in a direction opposite to the discharging direction to release the clogging. In this case, the chip components fall into the alignment grooves and are aligned in the column direction. For example, if the chip part has a rectangular parallelepiped shape that is longer than the width and height, the chip part can be aligned in the column direction with the alignment groove if the width of the alignment groove is set larger than the width and height of the chip part and smaller than the length. Can be aligned. The chip part that has fallen into the alignment groove slides downward due to gravity and reaches the gate. Here, the chip component in the lying position passes through the gate as it is and is discharged to the discharge passage. However, when the chip component in the standing posture reaches the gate, the chip component is clogged with the gate. Therefore, the chip component in the standing posture in which the claw portion of the rotating drum is stopped at the gate is pushed in the direction opposite to the discharging direction, and the chip component is removed from the gate or is brought down to the sideways posture. As a result, the clogging is released, and the subsequent chip parts are discharged from the gate.
[0008]
When a recess for receiving a predetermined number of chip components is provided at the rear end of the pocket in the rotational direction, chip components that spill out of the pocket during the rotation of the rotating drum are reduced. Can be reliably inserted. In particular, when the rotating drum is intermittently rotated, the chip component is easily spilled from the pocket each time it is stopped, but this problem can be solved by providing the recess.
[0009]
According to a third aspect of the present invention, an external storage chamber is provided above the inner chamber, a supply passage that is inclined downward from the outer storage chamber toward the inner chamber and that supplies chip components from the outer storage chamber to the inner chamber is provided. desirable. In this case, since the chip parts are cascade-moved in two stages from the external storage chamber to the inner chamber and further to the outer chamber, the chip parts are aligned even if a large amount of parts are put into the external storage chamber. The stirring time is short and the alignment efficiency is high. Further, since the chip component slides down the supply passage by its own weight, an external force such as a stirring force does not act on the chip component during the passage from the external storage chamber to the inner chamber, and damage can be reduced.
[0010]
In addition, it is desirable to provide the opening to the inner chamber of the supply passage in the middle position in the vertical direction of the inner chamber, particularly below the receiving port. In this case, chip components do not accumulate above the opening, and the amount of components in the inner chamber can be limited to a certain amount or less, and chip components that have not been scooped up in the pockets are inadvertently discharged from the receptacle. Can be prevented.
[0011]
As in claim 4, if a part insertion port is provided in the upper part of the external storage chamber, and a bulk case for storing a predetermined number of chip parts is detachable with its opening facing downward, Since the chip parts in the bulk case can be automatically put into the external storage chamber using gravity, the work can be automated.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
1 to 5 show an example of a component supply apparatus according to the present invention.
In this embodiment, as shown in FIG. 6, a rectangular parallelepiped chip component C having a height and a width of H and W (where H≈W) and a length of L (L> H, L> W), respectively. As shown in FIG. 7, a cylindrical chip part C having a diameter d (d≈W, H) and a length L (L> d) as shown in FIG. 7 and a width W and a height as shown in FIG. The chip part C may be a rectangular parallelepiped shape (L>W> H) having a dimensional difference with the height H. Ca and Cb are electrodes formed at both ends of the chip component C in the length direction. In FIG. 2 to FIG. 4, the chip component C is drawn larger than the actual size for easy understanding.
[0014]
The supply apparatus main body 1 is comprised by the substantially plate-shaped member installed vertically, and the external storage chamber 2 is formed in the upper part of the rear-end part. A component insertion port 3 is provided in the upper part of the external storage chamber 2, and a bulk case 4 that accommodates a predetermined number of chip components C is detachable from the component insertion port 3 with its opening 4 a facing downward. . That is, a detachable portion 5 is formed at the rim of the component insertion port 3, and the bulk case 4 is detachable by slidingly engaging the lower end portion of the bulk case 4 with the detachable portion 5 from the side. Note that a known shutter is attached to the bulk case 4, and the chip component C in the bulk case 4 is introduced into the external storage chamber 2 by opening the shutter with the bulk case 4 attached to the component insertion port 3. . Thus, if the bulk case 4 is attached to the component insertion port 3, the volume of the external storage chamber 2 can be substantially expanded.
[0015]
The bottom surface 2a of the external storage chamber 2 is formed in an inclined shape, and a supply passage 6 for supplying chip components C from the external storage chamber 2 to the inner chamber 21 of the component storage chamber 20 described later is provided at the bottom of the bottom surface 2a. An inlet 6a is provided. The supply passage 6 is inclined downward from the external storage chamber 2 toward the inner chamber 21 so that the chip part C can slide down by its own weight.
[0016]
A circular recess 7 is formed on the surface of the central portion of the main body 1, and a rotary drum 10 is fitted in the recess 7 so as to be rotatable about a horizontal axis. The rotating drum 10 is rotationally driven in the direction of the arrow by a driving device (not shown). The rotation method may be continuous rotation or intermittent rotation. As shown in FIGS. 2 and 3, a component storage chamber 20 is provided between the main body 1 and the rotating drum 10. The component storage chamber 20 is divided into an inner chamber 21 and an outer chamber 22 by a circumferential wall 12 formed on the rotary drum 10.
[0017]
The opening 6 b to the inner chamber 21 that is the outlet of the supply passage 6 is formed at an intermediate position in the vertical direction of the inner chamber 21, preferably slightly below the center of the inner chamber 21. For this reason, it is possible to prevent the chip component C sliding down the supply passage 6 from entering the inner chamber 21 more than necessary. Note that the volume of the inner chamber 21 is smaller than the volume of the external storage chamber 2.
[0018]
A plurality of pockets 13 (four in this embodiment at intervals of 90 °) for scooping up a predetermined number of chip parts C in the inner chamber 21 as the rotary drum 10 rotates is provided on the inner periphery of the circumferential wall 12. A receiving port 23 for receiving the chip component C scooped up by the pocket 13 is provided at a portion facing the inner chamber 21 of the main body 1. The receiving port 23 is located above the rotation center of the rotary drum 10, that is, above the outlet 6 b of the supply passage 6. An introduction passage 24 is formed in the main body 1 to guide the chip component C received at the receiving port 23 to the outer chamber 22 by its own weight.
[0019]
The shape of the pocket 13 is not limited to a square shape as shown in FIG. 2, but may be a shape having a recess 13a at the rear end in the rotational direction as shown in FIG. In this case, the chip component C spilling from the pocket 13 during the rotation of the rotary drum 10 is reduced, and can be reliably put into the receiving port 23. In particular, when the rotating drum 10 is intermittently rotated, the chip component C is easily spilled from the pocket 13 each time it is stopped, but this problem can be solved by providing the recess 13a.
[0020]
The outer chamber 22 is provided with an alignment discharge section that discharges the chip components in a line. The alignment discharge portion is composed of an alignment groove 30, a gate 32, a discharge passage 33, and a claw portion 14.
As shown in FIGS. 2 and 3, the alignment groove 30 of this embodiment has a width that allows for a certain clearance in the width dimension W of the chip component C on the inner peripheral surface of the recess 7 of the main body 1, and the chip component. This is a semicircular arc-shaped groove formed at a depth allowing for a certain clearance in the height dimension H of C. In addition, a guide surface 31 that is tapered in the cross-sectional direction of the alignment groove 30 is formed on the inner peripheral surface of the recess 7. The guide surface 31 is inclined toward the alignment groove 30 and has a function of guiding the chip part C to the alignment groove 30. A guide surface 15 that faces the guide surface 31 of the main body 1 is formed on the inner surface of the rotary drum 10. The guide surfaces 31 and 15 are not limited to a tapered shape, and may be any shape that allows the chip component C to slide into the alignment groove 30.
[0021]
Formed at the lower end of the alignment groove 30 is a gate 32 that is large enough to allow the chip components C to pass through in the vertical direction and in a horizontal position. That is, the height and width of the gate 32 are slightly larger than H and W and smaller than L. The width of the gate 32 is equal to the width of the alignment groove 30. Further, a discharge passage 33 is formed in the main body 1 below the gate 32.
[0022]
A plurality of claw portions 14 project from the peripheral edge of the rotating drum 10 at equal intervals in the circumferential direction. Although four claw portions 14 are illustrated in FIG. 2, more claw portions 14 may be provided. The claw portion 14 rotates so as to pass over the gate 32 and the alignment groove 30, and has a function of releasing the clogging of the chip part C at the gate 32 and a function of feeding the chip part C in the outer chamber 22 into the alignment groove 30. Have That is, when the chip component C slides down along the alignment groove 30, it hits the gate 32 and stops, and the subsequent chip component C is blocked from passing. At this time, when the rotary drum 10 rotates in the direction of the arrow, the claw portion 14 urges the chip part C stopped at the gate 32 in the direction opposite to the discharge passage 33 as shown in FIG. Tilt down or push back toward alignment groove 30. Thereby, the clogging of the gate 32 is eliminated.
[0023]
The discharge passage 33 includes a first passage 34 formed substantially tangential to the arcuate alignment groove 30 and a second passage 35 that intersects the first passage 34. The inclination angle α of 34 is larger than the inclination angle β of the second passage 35, and α is preferably set to 35 ° or more so that the chip part C slides down in the first passage 34 reliably. The inclination angle β of the second passage 35 may be 35 ° or less.
[0024]
A blade 40 made of a thin metal plate is disposed at the bottom of the second passage 35 so as to be movable back and forth. Long holes 41 are provided in the front and rear portions of the blade 40, and the blade 40 can reciprocate in parallel with the second passage 35 by inserting the pins 42 protruding from the main body 1 into the long holes 41. The stroke of the blade 40 is set shorter than the length of the chip part C. By reciprocating the blade 40 back and forth by driving means (not shown), the friction between the chip part C and the blade 40 in the second passage 35 is cut off, and the chip part C stays even if the inclination angle β is small. Can be slid down.
In addition, the lower end part of the 2nd channel | path 35 is connected to the extraction part which is not shown in figure.
[0025]
Here, the operation of the component supply apparatus configured as described above will be described.
First, when the bulk case 4 is attached to the component insertion port 3 and the chip component C is loaded into the external storage chamber 2, the chip component C is sent to the inner chamber 21 due to the inclination of the bottom surface 2 a of the external storage chamber 2 and the supply passage 6. . The number of chip parts C stored in the inner chamber 21 is limited by the position of the outlet 6 b of the supply passage 6. The chip parts C that have entered the inner chamber 21 are scooped up by a small number in the pocket 13 as the rotary drum 10 rotates, and are put into the receiving port 23. Then, it is introduced into the outer chamber 22 through the introduction passage 24. In particular, the number of parts supplied per unit time from the inner chamber 21 to the outer chamber 22 determined by the number of pockets 13, the rotational speed of the rotating drum 10, the size of the receiving port 23, etc. is discharged from the outer chamber 22 through the gate 32. By reducing the number of parts discharged per unit time, the number of chip parts C in the outer chamber 22 can be limited to an appropriate number, and good alignment / discharge efficiency can be maintained.
[0026]
The chip component C that has entered the outer chamber 22 falls into the alignment groove 30 and is aligned in a predetermined direction. Then, it slides downward along the alignment groove 30, passes through the gate 32, and reaches the discharge passage 33. The chip component C standing up in the alignment groove 30 stops at the gate 32, but the claw portion 14 periodically passes over the gate 32 in the direction opposite to the discharge direction, so the chip component C stopped at the gate 32 lies sideways. To be. Therefore, the clogging is immediately eliminated and the discharge efficiency is not lowered. In addition, since the number of chip parts C in the outer chamber 22 is small, no bridging occurs in the outer chamber 22, the alignment efficiency is good, and discharge to the discharge passage 33 without stirring for a long time. Therefore, the damage of the chip part C is also small.
[0027]
The chip part C that has entered the discharge passage 33 slides down the first passage 34 having a large inclination angle α and reaches the second passage 35. Since the inclination angle β of the second passage 35 is relatively small, there is a possibility that the chip component C may stay due to friction with the blade 40. However, since the blade 40 is reciprocated back and forth, the chip component C is smoothly moved. Can slide down.
[0028]
Note that if the inclination angle β of the second passage 35 is reduced, the crossing angle can be reduced when the second passage 35 is taken out to the horizontal take-out portion, and the parts can be moved smoothly between the second passage 35 and the take-out portion. The chip parts C are taken out one by one by a take-out device such as a chip mounter at the take-out part.
[0029]
In the above embodiment, the height and width direction (H, W direction) of the chip component C is selected by the alignment groove 30 provided in the inner periphery of the main body 1, and the length direction (L direction) is selected by the gate 32. Therefore, the alignment / discharge efficiency is remarkably improved compared to the conventional bulk feeder. Further, since the discharge amount of the chip component is hardly affected by the rotation speed of the rotary drum 10, damage to the component is reduced by slowly rotating the rotary drum 10 and is quiet.
[0030]
The component supply apparatus of the present invention is not limited to the structure of the above embodiment.
In the above embodiment, the concave pocket 13 is formed on the inner peripheral surface of the circumferential wall 12 of the rotary drum 10, but the pocket is not limited to this. For example, a scraping plate is provided at an appropriate interval on the inner surface of the circumferential wall. You may comprise a pocket by fixing.
In the above embodiment, the arcuate alignment groove 30, the gate 32, the discharge passage 33, and the claw portion 14 constitute the alignment discharge portion, but the present invention is not limited to this. For example, the alignment discharge unit may be configured by providing another circumferential wall on the outer circumferential side of the circumferential wall 12 and forming a communication path in the circumferential wall. In this case, a gate and a nail | claw part become unnecessary.
In the above embodiment, the discharge passage 33 is constituted by the first passage 34 having the large inclination angle α and the second passage 35 having the blade 40 and the small inclination angle β, but may be constituted by only one of the passages. .
In the above embodiment, the bulk case 4 is attached to and detached from the upper part of the external storage chamber 2, but the chip component C may be directly put into the external storage chamber 2 without using the bulk case 4.
In the present invention, the external storage chamber 2 is not essential, and for example, chip components may be directly put into the inner chamber 21.
[0031]
【The invention's effect】
As is apparent from the above description, according to the present invention, as the rotating drum rotates, the chip parts in the inner chamber are scooped up in the pocket, received by the receiving port, and sent to the outer chamber through the introduction passage. Therefore, there are relatively few chip parts in the outer chamber, bridges are less likely to occur, and alignment / discharge efficiency is good. Moreover, since the stirring time per chip component can be shortened, the damage given to the component is small and the component defect rate can be reduced.
[Brief description of the drawings]
FIG. 1 is a front view of an example of a component supply apparatus according to the present invention.
FIG. 2 is a cross-sectional view of the component supply apparatus of FIG.
3 is a cross-sectional view taken along line III-III in FIG.
FIG. 4 is an enlarged view of another example of a pocket.
FIG. 5 is an enlarged cross-sectional view of the gate portion of FIG. 2;
FIG. 6 is a perspective view of an example of a chip component.
FIG. 7 is a perspective view of another example of the chip component.
FIG. 8 is a perspective view of still another example of the chip component.
[Explanation of symbols]
C Chip component 1 Body 2 External storage chamber 4 Bulk case 6 Supply passage 10 Rotating drum 12 Circumferential wall 13 Pocket 14 Claw portion 20 Component storage chamber 21 Inner chamber 22 Outer chamber 23 Receiving port 24 Inlet passage 30 Alignment groove 32 Gate 33 Discharge passage

Claims (4)

In a component supply apparatus for lining up a rectangular parallelepiped chip component having a length L longer than a height H and a width W or discharging a columnar chip component having a length L longer than a diameter d in a line and in a lateral position,
A supply device main body, a rotating drum that rotates with respect to the main body as a central axis with respect to the main body, and a component storage chamber that is formed between the main body and the rotating drum and stores chip components.
The rotating drum is provided with a circumferential wall that partitions the component storage chamber into an inner chamber and an annular outer chamber,
Chip parts are supplied to the inner chamber from the outside,
The circumferential wall is provided with a pocket for scooping up a predetermined number of chip components in the inner chamber as the rotating drum rotates.
The part facing the inner chamber of the main body is provided with a receiving port for receiving the parts scooped up by the pocket,
The main body is provided with an introduction passage for guiding components received at the receiving port to the outer chamber,
The outer chamber is provided with an alignment discharge part for discharging the chip parts in a line .
The alignment discharge portion is formed along an inner peripheral surface of the main body constituting the outer chamber, and has an arc-shaped alignment groove that allows chip components to fall down, vertically align in a row, and slide downward, and a lower end of the alignment groove Formed of a gate that passes through chip parts that slide down in a sideways manner along the alignment groove one by one, and a discharge passage that is connected to the lower side of the gate and is inclined downward.
The rotating drum has a claw portion that rotates so as to pass over the gate and the alignment groove and urges the chip component in a standing posture stopped at the gate in a direction opposite to the discharging direction to release the clogging. component supply device, characterized in that are provided. The component supply device according to claim 1, wherein a recess for receiving a predetermined number of chip components is provided at a rear end of the pocket in the rotation direction. An external storage chamber is provided above the inner chamber,
3. The component supply apparatus according to claim 1, further comprising a supply passage that is inclined downward from the external storage chamber toward the inner chamber and supplies chip components from the external storage chamber to the inner chamber. A component insertion port is provided in an upper part of the external storage chamber, and a bulk case for storing a predetermined number of chip components is detachable from the component insertion port with its opening facing downward. 4. The component supply apparatus according to 3.

Images